The California Democrat pointed to her delegation's weekend stop in Greenland, "where we saw firsthand evidence that climate change is a reality; there is just no denying it."
"It wasn't caused by the people of Greenland - it was caused by the behavior of the rest of the world," she said.
Scientists have noticed that Greenland's output of ice into the North Atlantic had increased dramatically, doubling over the decade that ended in 2005.
A thousand years ago the Vikings stopped at Greenland. They found a lot less ice than Pelosi saw. The Earth was experiencing a long period of much warmer temperatures than we have today, all caused by natural force.
The Vikings had farms on Greenland then that are still covered by ice today.
Those that are ignorant of history can make the dumbest remarks, and those that are equally ignorant believe them.